Die-holding means for metal heading and trimming machines



T. H. BAUCK Dec. 31, 1929.

DIE HOLDING MEANS FOR METAL HEADING AND TRIMMING MACHINES Filed Sept. 24, 1928 Patented Dec. 31, 1929 UNITED STATES I'P'ATENT OFFICE THEODORE 'H. BAUGK, or WATERBURY, ooNNEc'rICirr; ASSIGNOR TOTI'IE E. a. MAN- VII-LE MACHINE COMPANY, on WATERBURY, CONNECTICUT, aconroaa'rxoN or CONNECTICUT DIE-HOLDING MEANS non METAL HEADINC AND TRIMMING MACKINES Application filed September 24, 1928. Serial No. 307,909. i

die holding block of such machines.

The object of the invention is to provide a simple and cheap means which can be easily and quickly manipulated for firmly securing the die holder in, or releasing the die holder i from, the die holding block of such machines whereby the time required for the removal and substitution of dies is reduced to a minimum, and without completely detaching the securing means.

In attaining this object the die holder is fitted in a vertical dove-tail mortice in the front face of the die holding block, which mortice on one side has a fixed gib and on the other side has a gib that is hinged to the die holding block by a vertical pintle. Clamp plates, arranged on the top and bottom of and engaged with the die holding block and with the hinged gib, are adaptedto be clamped by a screw so that the plates will hold the hinged gib insuch a position that it will secure the die holder in the die holding block. When the clamp screw is loosened the clamping action of the plates is relieved so that the pivoted gib can be swung out and the die holdercan be removed fromthe dieholding block without detaching any of the parts which hold it.

, In the accompanying drawings which illusstrate one embodiment of the invention, Fig. 1 is a view looking at the front face of the die holding block with a die holder provided with a trimming die, secured in position by means of a clamped swinging gib. Fig. 2 is a top view of the same. Fig.3 is an edge view of the die holding block with the swinging gib and the clamp plates.

The die holding block 1 is adapted to be bolted to the inner vertical wall of the front end of the frame of a heading, trimming, punching and like machine, in the common manner. In the front face ofthe die holding block is a vertical dove-tail mortice adapted to receive the chamfered side edges of the die holder 2. Back of this mortice is a recess for receiving the anvil plate 3, and an opening in which a placed. y I I I The die holder has an opening into which is fitted the die '5 that has a socket or opening of the necessary size and shape to perform the required work, the die illustrated having a rectangular opening 6 shaped to trim the heads of bolts. The die when in operative position isbacked by the anvil plate, it has a flange 7 around its rear edge to prevent its withdrawal from the die holder and it is locked against rotation by a key 8 that is fitted into slotscut in the periphery of the die and the edge ofthe openingin the die holder.

One side of the dove-tail mortice in the die holding blockin which the chamfered edges of the die holder are fitted, is formed by a fixed gib 9while the other side of the mort-ice is formed by the beveled wall 10 of the gibll thatis hinged to the die holding block by the vertical pintle 12 which passes through-the parts in such manner that the beveled edgeof the gib is capable of swingingina horizontal plane toward and from the chamfered edge on one side of the die holder.

1 yYoke shaped clamp plates 13 are located above and below the die holdingblock. The rearend of each ofthese plates'has a lug 14 that projects into a slot inthe die holding block, andfthe front end of each plate has a lug 15 with a chamfered face that is designed to engage the; beveled wall of a recessin the end of the swinging gib, A clamp screw 16 is passed through perforations intlie clamp platesand die holding block for the purpose of drawingtheplates towardeach other and clamping the swinginggib in holding position. Springs 17 are preferably arranged in sockets in thedie holding block about the clamp screw so as to thrust betweenthe die holding block and the clamp plates and force the plates outwardwhen the clamp screw is loosened. w f

When the clamp screw is loosened the clamp plates are thrust outward by the springs so asto release theclamps from the hinged gib which may then be swung outward leaving the die holder free to be removed from the guiding sleeve 4 is usually die holding block. This allows the quick removal of a die and the substitution of another die when desired, without completely detaching any of the holding parts. When a die has been inserted in the die holder the holder is placed in position at the front of the die holding block and the hinged gib is swung back and securely clamped by the plates when the clamp screw is tightened.

The invention claimed is:

1. Die holding means comprising a die holding block having a mortice in its front face, a die holder having an opening for a die located in said mortice, a gib hinged to the die holding block and engaging and retaining said die holder in place, clamps engaging the die holding block and hinged gib or fastening said gib in position to secure the die holderto the die holding block.

2. Die holding means comprising a die holding block havin a vertical mortice in its front face, a die fiolder having an opening for a die located in said mortice, a horizontally swin ing gib hinged to the die holding block and engaging and retainin said die holder in place, clamps engagin t e die holdingl block and hinged gib for fastening said g1 in osition to secure the die holder in the die b ock.

3. Die holding means comprising a ,die holding block having a vertical dove-tail morticein itsfront face, a die holder having chamfered edges fitting said mortice and an opening for a die, a gib hinged to the dieholding'block and forming one wall of said dove-tail mortice, clamps en a 'n the gr installing holdin block and hinged gi said i% in place.

4- r e di g means eemp is d holding block having a mortice in its front fuse, i ho de fi ting sa d me i n having an openin fora die, a gib hinged to the die holding b ook and forming onewall o mort ce, l mp engaging h e holdin block and hinged gib for securing said gi in place, a screw forfastening said clamps, and springs for disen aging the clam when the screw is'looseneg.

'5. ie holding means comprising a .die holding block'having a mortice in its face, a die holder fitting said mortice, a gib hinged to the die holding block' and forming one Wall of said mortice and means engaging the die holding block and hinged gib for securing said glib in place. I

-6. ie'holding means comprising ,a die holdmgblock having a mortioe in its :front face, said mortice having a fixed gib on one a side and a hinged gib on the other side, a die holder having an opening for a die fitted in said mortice, clamps engaging said'hi'nged gib for fasteningsaid gib in position to secure the die holder in. said mortioe.

THEODORE H. 'BAUGK. 

